Just wanted to share a wild theory that may tell us who the other characters are.......by looking at the music.
So, as everyone knows the website updates every Wednesday and adds a new track. So far, its always been a different series, with the only overlap being the ones without a series (Noisy Notebook and the Galaga song). However, songs related to the character's series are added soon after the character was announced. Splatoon and Metroid were the first to get songs added and Castlevania and Gangplank Galleon were added right after that. Now, you may think that its just a coincidence since there could always be a repeat or a character doesn't have to added added with music soon after. On the second point, it would be strange as, at least with the last two characters, their music was shown off soon after they were announced; Castlevania was the same day. Even if this is true, couldn't you have a repeat? So say a song from a series is announced and then another added with a character. While that's still possible, I don't think it is the case based on how it works out. Let me explain.
To make my case, let me present a few points
- So far, there have been no duplication of series. So, there aren't two Splatoon songs on the site for instance.
- There are 31 series in Super Smash Bros as of writing this
- There have been 13 songs on the site
- There are 15 Wednesdays until Dec 7th
- For all intensive purposes, this is as of August 22nd 2018.
So far, the following series have a song on the site: DK, Zelda, Metroid, Kirby, F-Zero, Fire Emblem, MGS, Megaman, Street Fighter, Splatoon, Castlevania
Also, there are two other songs on the site that don't have a series: Noisy Notebook and Galaga Medley. I assume these go with Wii Fit and Pac-Man respectively.
The following series do not have a song: Mario, Yoshi, Star Fox, Pokemon, Earthbound, Ice Climbers, Game and Watch, Kid Icarus, Wario Ware, Pikmin, Sonic, Gyromite, Animal Crossing, Punch Out, Xenoblade, Duck Hunt, Final Fantasy, Bayonetta (as noted above, Wii Fit and Pac-Man don't have songs either)
So there are 18 series left without a song (or at least a song related to them). But there are only 15 weeks left right. Well if we exclude the classic series and Final Fantasy (as we know it only has the two songs from Smash 4), that leaves 13 series that will likely have a song. There are two things we can take from here:
First, its very likely there will be at least one new series. This isn't unusual as each game has added a series towards the end. Olimar (Pikmin) and Shulk (Xenoblade) were the last two characters shown off before the game's release. Smash generally announces characters in an anti-climatic order with the more popular characters upfront and the lesser known or less popular ones later. So, with the 13 series, we will likely have one classic song and a song from a new series which makes up the 15.. For references, Duck Hunt does have a new song in their little trailer. I expect the series could be Rhythm Heaven (as a character was planned for Smash 4), ARMS or a guest character of some kind.
Second, we can theorize is what series will get new characters. Consider the series and the characters a lot of people talk about. Shadow. Well, Sonic hasn't had a song yet. Isabelle. Same for Animal Crossing. There isn't a Pokemon song either. Same for Mario (which could relate to Geno). Of course, not all of these will have characters attached to them (such as Star Fox or Wario Ware). So with these in mind, the characters that seem possible (including echoes) would be Geno (Mario), Gen 7 Pokemon, Shadow (Sonic the Hedgehog), Isabelle (Animal Crossing), Elma or Rex (Xenoblade) and Jeanne (Bayonetta). Likewise, I don't think Skull Kid (Zelda) Bandanna Dee (Kirby) or Ken (Street Fighter) wont happen as music would have been saved for them (and both Skull Kid and Ken have songs that could be used for them).
Now, this could be totally wrong, but what I find interesting is these fit perfectly. I didn't have to finagle anything to come to the 13 series number and it seems to play out perfectly where each series that could reasonably have a song will get one on the site. There has also been a big emphasis on the series as you can organize the character page by series and they spoke about series during the E3 showcase. A lot of Smash theories are nothing than needless speculation and tend to be wrong, but hopefully you liked it. Thoughts??